Allow some commands to generate k8s, without requiring build files. (#1966)

* Allow some commands to generate k8s, without requiring build files.
* update changelog
* adpt sub-commands
* review changes
* Update cmd/operator-sdk/main.go

Author: camilamacedo86

CHANGELOG.md

@@ -18,6 +18,7 @@
 - Upgrade base image for Go, Helm, and scorecard proxy from `registry.access.redhat.com/ubi7/ubi-minimal:latest` to `registry.access.redhat.com/ubi8/ubi-minimal:latest`. ([#1952](https://github.com/operator-framework/operator-sdk/pull/1952))
 - Upgrade base image for Ansible from `registry.access.redhat.com/ubi7/ubi:latest` to `registry.access.redhat.com/ubi8/ubi:latest`. ([#1990](https://github.com/operator-framework/operator-sdk/pull/1990) and [#2004](https://github.com/operator-framework/operator-sdk/pull/2004))
 - Updated kube-state-metrics dependency from `v1.6.0` to `v1.7.2`. ([#1943](https://github.com/operator-framework/operator-sdk/pull/1943))
+- Change the structure used by sub-commands to check the type and the root dir of the projects for no longer relay in the `Dockerfile` and `main.go` files. ([#1966](https://github.com/operator-framework/operator-sdk/pull/1966)) 
 
 ### Breaking changes
 

cmd/operator-sdk/main.go

@@ -57,7 +57,8 @@ func main() {
 				log.Debug("Debug logging is set")
 			}
 			if err := checkDepManagerForCmd(cmd); err != nil {
-				log.Fatal(err)
+				// Allow cases where subcommands do not require deps files
+				log.Warnf("Operator type %s and the %s. Please, review the structure of your project.", projutil.GetOperatorType(), err)
 			}
 		},
 	}

cmd/operator-sdk/printdeps/cmd.go

@@ -16,13 +16,12 @@ package printdeps
 
 import (
 	"fmt"
-
 	"github.com/operator-framework/operator-sdk/internal/pkg/scaffold"
 	"github.com/operator-framework/operator-sdk/internal/pkg/scaffold/ansible"
 	"github.com/operator-framework/operator-sdk/internal/pkg/scaffold/helm"
 	"github.com/operator-framework/operator-sdk/internal/util/projutil"
-
 	"github.com/spf13/cobra"
+	log "github.com/sirupsen/logrus"
 )
 
 var depManager string
@@ -50,13 +49,19 @@ func printDepsFunc(cmd *cobra.Command, args []string) error {
 	}
 	projutil.MustInProjectRoot()
 
+	// Allow the cases of some sub-commands might not require check the deps files.
+	if projutil.GetOperatorType() == projutil.OperatorTypeUnknown {
+		log.Fatal(fmt.Errorf("unknown project type, we were unable to print the deps"))
+	}
+
 	if err := printDeps(depManager); err != nil {
 		return fmt.Errorf("print deps failed: %v", err)
 	}
 	return nil
 }
 
 func printDeps(depManager string) (err error) {
+
 	// Use depManager if set. Fall back to the project's current dep manager
 	// type if unset.
 	mt := projutil.DepManagerType(depManager)

internal/util/projutil/project_util.go

@@ -35,13 +35,13 @@ const (
 	GoModEnv   = "GO111MODULE"
 	SrcDir     = "src"
 
-	fsep            = string(filepath.Separator)
-	mainFile        = "cmd" + fsep + "manager" + fsep + "main.go"
-	buildDockerfile = "build" + fsep + "Dockerfile"
-	rolesDir        = "roles"
-	helmChartsDir   = "helm-charts"
-	goModFile       = "go.mod"
-	gopkgTOMLFile   = "Gopkg.toml"
+	fsep          = string(filepath.Separator)
+	buildDir      = "build" + fsep
+	rolesDir      = "roles"
+	pkgApiDir      = "pkg" + fsep + "apis" + fsep
+	helmChartsDir = "helm-charts"
+	goModFile     = "go.mod"
+	gopkgTOMLFile = "Gopkg.toml"
 )
 
 // OperatorType - the type of operator
@@ -114,11 +114,11 @@ func MustInProjectRoot() {
 // CheckProjectRoot checks if the current dir is the project root, and returns
 // an error if not.
 func CheckProjectRoot() error {
-	// If the current directory has a "build/Dockerfile", then it is safe to say
+	// If the current directory has a "build/", then it is safe to say
 	// we are at the project root.
-	if _, err := os.Stat(buildDockerfile); err != nil {
+	if _, err := os.Stat(buildDir); err != nil {
 		if os.IsNotExist(err) {
-			return fmt.Errorf("must run command in project root dir: project structure requires %s", buildDockerfile)
+			return fmt.Errorf("must run command in project root dir: project structure requires %s", buildDir)
 		}
 		return errors.Wrap(err, "error while checking if current directory is the project root")
 	}
@@ -129,7 +129,7 @@ func CheckGoProjectCmd(cmd *cobra.Command) error {
 	if IsOperatorGo() {
 		return nil
 	}
-	return fmt.Errorf("'%s' can only be run for Go operators; %s does not exist", cmd.CommandPath(), mainFile)
+	return fmt.Errorf("'%s' can only be run for Go operators; %s, %s or %s does not exist", cmd.CommandPath(), goModFile, gopkgTOMLFile, pkgApiDir)
 }
 
 func MustGetwd() string {
@@ -215,8 +215,12 @@ func GetOperatorType() OperatorType {
 }
 
 func IsOperatorGo() bool {
-	_, err := os.Stat(mainFile)
-	return err == nil
+	_, errGoMod := os.Stat(goModFile)
+	_, errGopkgTOMLFile := os.Stat(gopkgTOMLFile)
+	_, errPkgApiDir := os.Stat(pkgApiDir)
+
+	// check if has go modules or dep files or pkg/api
+	return errGoMod == nil || errGopkgTOMLFile == nil || errPkgApiDir == nil
 }
 
 func IsOperatorAnsible() bool {